Calculate the number-average and weight-average molar mass, Mathematics

Three mixtures were prepared with very narrow molar mass distribution polyisoprenesamples with molar masses of 8000, 25,000, and 100,000 as indicated below.

(a) Equal numbers of molecules

(b) Equal masses of sample

(c) Equal viscosities of sample dissolved in tetrahydrofuran

(K = 19.5 L g-1, a = 0.73)

For each of the samples, calculate the number-average and weight-average molar mass, and comment on the meaning of the values obtained.

 

 

Posted Date: 2/27/2013 5:15:02 AM | Location : United States







Related Discussions:- Calculate the number-average and weight-average molar mass, Assignment Help, Ask Question on Calculate the number-average and weight-average molar mass, Get Answer, Expert's Help, Calculate the number-average and weight-average molar mass Discussions

Write discussion on Calculate the number-average and weight-average molar mass
Your posts are moderated
Related Questions

Example    Write down the equation of a circle  alongwith radius 8 & center ( -4, 7 ) . Solution Okay, in this case we have r =8 , h = -4 and k = 7 thus all we have to do i

what are the factors af 34?

how to slove problems on equations

1. Let , where  are independent identically distributed random variables according to an exponential distribution with parameter μ. N is a Binomially distribut

Area with Polar Coordinates In this part we are going to look at areas enclosed via polar curves.  Note also that we said "enclosed by" in place of "under" as we usually have

1. Show that there do not exist integers x and y for which 110x + 315y = 12. 2. If a and b are odd integers, prove that a 2 +b 2 is divisible by 2 but is NOT divisible by 4. H

Q. Show Trigonometric Functions on a Graph? Ans. By discussing the trig functions with respect to an angle in a right-angle triangle, we have only considered angles betwee

Horizontal asymptotes : Such as we can have vertical asymptotes defined in terms of limits we can also have horizontal asymptotes explained in terms of limits. Definition

A 4-inch by 6-inch photograph is going to be enlarged through increasing each side by the similar amount. The new area is 168 square inches. How many inches is each dimension incre